21156595

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{2819}}^1$

素因数の和:2922

約数の個数: 16

約数和(自身を含む): 27072000

約数和(自身を除く): 5915405

約数列:

[1, 5, 19, 79, 95, 395, 1501, 2819, 7505, 14095, 53561, 222701, 267805, 1113505, 4231319, 21156595]

約数ペア:

[(1, 21156595), (5, 4231319), (19, 1113505), (79, 267805), (95, 222701), (395, 53561), (1501, 14095), (2819, 7505)]